SUMMARY: Checksum error at boot time

From: vispi@lgc.com
Date: Sat Apr 10 1993 - 08:50:35 CDT


-------

My original query:
==>
==>
==>Hi
==>One of our users has an IPX SunOs 4.1.1, 32M ram, I internal Quantum 207M dr
==>ive
==>two external 1G disks. He shutdown his machine gracefully, (sync, fasthalt
==>that kind of stuff, and then turned the power off.) Now it does not
==>boot. It gives a checksum error
==>
==> Booting off sbus@..........sd@3,0
==> Checksum 68bb5692 != 5f583357
==> Trying to boot anyway.
==> Instruction access exception.
==>
==>I booted it as a diskless client over the net and it booted just fine.
==>I'm lost. Any idead or suggestion will be appreciated and I will summarize.
==>Thanks
==>
==> -Vispi

The answer, as all the respondents pointed out was that somehome (I don't know
how) the file /boot was missing. An installboot fixed it.

The process I used:

Booted it as a diskless client.

# mount /dev/sd0a /mnt
# cd /mnt
# ftp'd /boot from another IPX to /mnt/boot
# cd /usr/kvm/mdec
# installboot -v /mnt/boot bootsd /dev/rsd0a
# halt

Booted it of its internal disk, and everything worked fine.
Thanks to the following for their prompt and accurate responses.

blymn@mulga.awadi.com.au (Brett Lymn)
weingart@inf.ethz.ch (Tobias Weingartner)
halvard@trd.sdata.no (Halvard Halvorsen)
Glenn Satchell glenn%ups.uucp@fourx.Aus.Sun.COM
kuhn@math.harvard.edu (Robert M. Kuhn)
Val Lowe <valerie@dcs.bellcore.com>
zshouben@pcs.cnu.edu (Zhou Shouben)
Robert_E_Keegan.Roch817@xerox.com (Bob Keegan)
winters@ct.med.ge.com (Steve Winters)
heiser@tdwr.ed.ray.com (Bill Heiser)
poffen@sj.ate.slb.com (Russ Poffenberger)
feldt@phyast.nhn.uoknor.edu (Andy Feldt)
robert@whiplash.er.usgs.gov (Robert Holder)
Steve Elliott <se@comp.lancs.ac.uk>
hkatz@nucmed.med.nyu.edu (Henry Katz)
John.McCartney@ebay.sun.com (John McCartney)



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